Stellar evolution is the process by which a star undergoes a sequence of radical changes during its lifetime. Depending on the mass of the star, this lifetime ranges from only a few million years (for the most massive) to trillions of years (for the less massive), considerably more than the age of the universe. ^
Small, relatively cold, low mass red dwarfs burn hydrogen slowly and will burn for hundreds of billions of years
Massive hot supergiants will live for just a few million years.
A mid-sized star like the Sun will remain on the main sequence for about 10 billion years. Hope tis helps!!
Answer:
D
Explanation:
A) Water that falls from the clouds towards the ground, especially as rain or snow.
B) The continuous movement of water on, above and below the surface of the Earth.
C) When plants or animals create offspring.
D) a recurring process where dead plants decomposes and provides nutrients to the soil that are absorbed by plant roots, making more plants grow.
Hope that helped :)
Answer:
A. to conserve soil nutrients
Explanation:
Crop rotation helps to maintain soil structure and nutrient levels. If you don't rotate crops, the soil in that field will inevitably begin to lose the nutrients plants need to grow.
Glycolysis is a process that helps fuel your metabolism. It is the first phase of the the ATP production cycle, ATP is what our cells use for energy.
